Gate Mcp Tool Calls Behind Deterministic Policy Enforcement With Intercept

---
name: "Gate MCP tool calls behind deterministic policy enforcement with Intercept"
slug: "gate-mcp-tool-calls-behind-deterministic-policy-enforcement-with-intercept"
description: "Use Intercept when an MCP-connected agent needs transport-layer policy enforcement for risky tools, argument limits, spend caps, hidden tools, or rate limits before calls reach the upstream server."
github_stars: 29
verification: "listed"
source: "https://github.com/PolicyLayer/Intercept"
author: "PolicyLayer"
publisher_type: "organization"
category: "Security & Verification"
framework: "MCP"
tool_ecosystem:
  github_repo: "PolicyLayer/Intercept"
  github_stars: 29
  npm_package: "@policylayer/intercept"
  npm_weekly_downloads: 336
---

# Gate MCP tool calls behind deterministic policy enforcement with Intercept

Use Intercept when an MCP-connected agent needs transport-layer policy enforcement for risky tools, argument limits, spend caps, hidden tools, or rate limits before calls reach the upstream server.

## Prerequisites

Node.js or Go runtime, MCP client, upstream MCP server, YAML policy file

## Installation

No source-backed install or usage instructions could be extracted automatically. Review the upstream project before running this skill in a sensitive workflow.

- Source: https://github.com/PolicyLayer/Intercept

## Documentation

- https://github.com/PolicyLayer/Intercept

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/gate-mcp-tool-calls-behind-deterministic-policy-enforcement-with-intercept/)